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"Lost" in the "Desert", When is Shabbat?
If one is lost in the desert and doesn't know when Shabbos occurs, you count 6 days and observe Shabbos or observe Shabbos and count 6 days. Rashi says you recite kiddush "לזיכרון בעלמא". How could he recite kiddush - there's a 6/7 chance that it's a bracha levatala!?!
Shiur provided courtesy of Torah Anytime
